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Optimization of surface coating condition using vapor form of alkanethiol on Cu nano powders for the application of oxidation prevention

机译：在铜纳米粉上使用链烷硫醇的蒸气形式优化表面涂覆条件以防氧化

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摘要

There has been a growing interest in metal nano powders recently, and researches on Copper (Cu) nano particles are actively pursued due to its good electrical conductivity and its low prices. However, its easiness to oxidation and corrosion has delayed its research progress in Cu nano particles to be applied in inkjet printed electronics and other related research area. To overcome these problems, new surface coating method on Cu nano particles has been developed using dry process instead of conventional wet coating method. Octanethiol was used as a dry coating material because it has sulfur at the end of monolayer to chemically bond to the surface of fresh non-oxidized Cu nano particles to prevent oxidation. Octanethiol does not bond to oxidized surface of Cu nano particles. Previously, bonding between octanethiol and Cu nano particles, more specifically bonding between Cu surface and Sulfur (S) was analyzed using X-ray Photoelectron Spectroscopy (XPS). As a result, S peak was detected on the coated Cu nano particles, indicating that octanethiol chain has been successfully coated on the surface of Cu nano particles.In this study, optimization of dry coating condition was studied by varying coating time and cycles. XPS was used to analyze the composition of coated material to monitor the change in amount of S and 0 peaks for each condition. It was found that as the amount of Sulfur increased, the amount of Oxygen decreased and vice versa. This finding indicates that dry coating has suppressed the formation of oxygen on the surface of Cu nano powders by surrounding Cu surface with Sulfur end of octanethiol chain. Based on these experiments, the optimum coating condition for suppressing Cu oxidation was found to be 5 min and 6 cycles. For future work, the lifetime of octanethiol layer on the surface of Cu surface needs to be studied.
机译：近年来，对金属纳米粉末的兴趣日益增长，并且由于其良好的导电性和较低的价格，对铜（Cu）纳米颗粒的研究得到了积极的追求。然而，由于其易于氧化和腐蚀，延缓了其在用于喷墨印刷电子及其他相关研究领域的铜纳米颗粒的研究进展。为了克服这些问题，已经开发了使用干法代替传统的湿法涂覆在铜纳米颗粒上的新表面涂覆方法。辛硫醇被用作干燥涂料，是因为它在单层末端具有硫，可以化学键合到新鲜的未氧化的铜纳米颗粒的表面，从而防止氧化。辛硫醇不与铜纳米颗粒的氧化表面结合。以前，使用X射线光电子能谱（XPS）分析了辛硫醇与Cu纳米颗粒之间的键合，更具体地说是Cu表面与硫之间的键合。结果，在包覆的铜纳米粒子上检测到S峰，表明辛硫醇链已成功包覆在铜纳米粒子的表面上。 XPS用于分析涂层材料的组成，以监测每种条件下S和0个峰的数量变化。发现随着硫的量增加，氧的量减少，反之亦然。该发现表明，干涂层通过将铜表面用辛硫醇链的硫末端包围而抑制了铜纳米粉末表面上氧的形成。基于这些实验，发现抑制Cu氧化的最佳涂覆条件是5分钟和6个循环。为了将来的工作，需要研究Cu表面上辛硫醇层的寿命。

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  • 来源
    《Applied Surface Science》 |2010年第8期|2332-2336|共5页
  • 作者

    Mi-Ryn Seong; Jinhyeong Kwon; Gye-Young Lee; Dong-Kwon Kim; Young-Seok Kim; Caroline Sunyong Lee;

  • 作者单位

    Division of Materials and Chemical Engineering, Hanyang University, Gyeonggi-do, 426-791, Republic of Korea;

    Division of Materials and Chemical Engineering, Hanyang University, Gyeonggi-do, 426-791, Republic of Korea;

    Division of Materials and Chemical Engineering, Hanyang University, Gyeonggi-do, 426-791, Republic of Korea;

    Division of Materials and Chemical Engineering, Hanyang University, Gyeonggi-do, 426-791, Republic of Korea;

    Korea Electronics Technology Institute, Gyeonggi-do, 463-816, Republic of Korea;

    Division of Materials and Chemical Engineering, Hanyang University, Gyeonggi-do, 426-791, Republic of Korea;

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  • 正文语种 eng
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  • 关键词

    vapor coating; octanethiol; nano-sized copper; sulfur; x-ray photoelectron spectroscopy;

    机译：汽相涂层;辛硫醇纳米铜;硫;X射线光电子能谱;

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